This is a port of a recently announced 2D sound spatialization library to Linux/X11 platform. The resulting binary acts as a sound "filter" between a 44.1khz mono source and outputs 44.1khz stereo spatialized sound. The UI uses low-level Xlib calls and does not require any GUI toolkit. Examples are provided to play MP3 files through this filter controlling the sound source position.

abcde is a frontend to cdparanoia, wget, cd-discid, id3, and your favorite Ogg Vorbis (the default), MP3, FLAC, Ogg Speex, or MPP (Musepack) encoder. It grabs an entire CD and converts each track to the desired format, then comments or ID3-tags each file, all with one command. It supports multiple output in a single CD read, the creation of a single track from a CD, resume operation, CD concatenation, volume normalization, gapless encoding (with LAME), parallelization, SMP, proxies, customizable filename organization and munging, playlist generation, distributed encoding via distmp3, and more.

Aglaophone is a system of interconnectable modules for the recording, processing, and playback of real-time audio. It features a real-time spectrogram display for visualization along with a number of processing modules. Modules include filters, downsamplers, upsamplers, and quantizers. An MP3 comparison module allows interactive blind comparison of MP3 encoded audio with CD audio, demonstrations of spectral imaging, quantization, and Smith-Barnwell filter bank based wavelet decomposition are included, and there is a module that can perform an automatic spectral analysis of a speaker system.

The Advanced Linux Sound Architecture is composed of several parts. The first is a fully modularized sound driver which supports module autoloading, devfs, isapnp autoconfiguration, and gives complete access to analog audio, digital audio, control, mixer, synthesizer, DSP, MIDI, and timer components of audio hardware. It also includes a fully-featured kernel-level sequencer, a full compatibility layer for OSS/Free applications, an object-oriented C library which covers and enhances the ALSA kernel driver functionality for applications (client/server, plugins, PCM sharing/multiplexing, PCM metering, etc.), an interactive configuration program for the driver, and some simple utilities for basic management.

AlsaPlayer is a new PCM player written with the ALSA sound system in mind. It also includes support for JACK, OSS, NAS, and ESD. It makes extensive use of multi-threading and supports OGG, MP3, WAV, CDDA (CD Digital Audio), MOD, S3M, IT, and many other input types. Features include a real- time effects stream, variable speed/pitch control, SHOUTcast/icecast streaming support, multiple active visual scopes, command line mode, playlists, plugin architecture, low-latency mode, and more.

amber aims to be an easy-to-use granular synthesis
tool for Linux to assist composers and electronic
musicians in creating interesting and complex
sounds. More information on the theory and
application of granular synthesis techniques can
be found at http://shoko.calarts.edu/~eric/gs.html.

aRts is a framework for developing modular
multimedia applications. The sound server, artsd,
allows multiple applications to cooperatively
process and output sound and music. aRts is
designed to provide its filter and synthesis
capabilities to other applications using the
multimedia communication protocol (MCOP). aRts is
also capable of modular realtime synthesis. It can
create sounds & music (realtime midi synthesis)
using small modules like oscillators for creating
waveforms, various filters, mixers, faders, etc.

This tool displays a volume knob on a ground plate or without a ground plate if you use -shape option. The volume knob adjusts the master volume of your sound card. Just grab the knob with the left button of your mouse and drag it around.